Originally posted by nmasatake ...what do you mean by merging verts. do i have to merg everyone of them?what is the difference Merge vert and simply Conbine the object?? .. You don't have to do them one by one, if they are similarly spaced apart then could select them all and set the merge threshold, that will tell Maya to merge verts that are only within X distance of each other The combine operation simply unites geometry into a new singular object, it does nothing to actually close gaps. Merge verts closes gaps, but will not work if the verts belong to separte objects.